CN112464424A - Air duct system prefabricating method based on BIM - Google Patents
Air duct system prefabricating method based on BIM Download PDFInfo
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Abstract
The invention relates to a BIM-based air duct system prefabricating method, which comprises the following steps: constructing a multi-professional design three-dimensional model based on a BIM technology; optimizing the pipeline system arrangement of the multi-professional design three-dimensional model to obtain a construction three-dimensional model; splitting the pipeline system of the construction three-dimensional model to obtain a standard section air pipe model and a parameter section air pipe fitting model; and producing to obtain a corresponding standard section air pipe according to the standard section air pipe model, installing the standard section air pipe to the site, then measuring on site to obtain the spatial connection data required by the parameter section air pipe fitting, updating the geometric parameters of the parameter section air pipe fitting model, and producing to obtain a corresponding parameter section air pipe fitting according to the updated parameter section air pipe fitting model. Compared with the prior art, the method can accurately process the parameter section air pipe fitting matched with the field installation distance, thereby avoiding the problem that the prefabricated air pipe system cannot be installed due to field operation and other construction errors.
Description
Technical Field
The invention relates to the technical field of air pipe system prefabrication, in particular to a BIM-based air pipe system prefabrication method.
Background
The air duct system is a duct system for air transport and distribution as an important part of electromechanical engineering. In order to ensure efficient installation of electromechanical engineering, prefabrication processing is often required to be carried out on an air duct system, however, with the rapid development of the current building industry, labor force is reduced, and under the condition that enough labor force is not available or the labor force cannot meet the installation engineering of the electromechanical air duct system, the application of building industrialization technology is usually used at present to improve the engineering installation efficiency and the project quality.
The prefabrication technology is the direction of effort in the engineering industry in recent years, and the prefabrication technology of the air pipe system is widely adopted in China, but in the popularization and application of the prefabrication technology, the utilization rate of the prefabricated air pipe system is low due to factors of field construction errors. The problem that the common prefabricated air pipe system cannot be installed due to errors mostly occurs in reducing, tee joint, cross joint and air pipe parts connected between an air pipe and an air pipe of the prefabricated air pipe system, and air pipe fittings such as reducing, hemispherical and square positions connected between the air pipe and equipment, and factors causing errors mainly include connection errors, positioning errors, construction errors of civil engineering operation surfaces and the like.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a BIM-based air duct system prefabricating method to improve the accuracy of a prefabricated air duct system and the utilization rate of the prefabricated air duct system.
The purpose of the invention can be realized by the following technical scheme: a BIM-based air duct system prefabrication method comprises the following steps:
s1, constructing a multi-professional design three-dimensional model based on the BIM technology;
s2, optimizing the pipeline system arrangement of the multi-professional design three-dimensional model to obtain a construction three-dimensional model with construction feasibility;
s3, splitting the pipeline system for constructing the three-dimensional model to obtain a three-dimensional model of the prefabricated air pipe system, wherein the three-dimensional model of the prefabricated air pipe system comprises a standard section air pipe model and a parameter section air pipe fitting model;
s4, producing and obtaining a corresponding standard section air pipe according to the standard section air pipe model, installing the produced standard section air pipe to the site, and then measuring the site to obtain the space connection data required by the parameter section air pipe fitting;
s5, updating the geometric parameters of the parameter section air pipe fitting model according to the spatial connection data required by the parameter section air pipe fitting measured on site to obtain an updated parameter section air pipe fitting model;
and S6, producing and obtaining corresponding parameter section air pipe fittings according to the updated parameter section air pipe fitting model, and finishing the prefabricating process of the air pipe system together with the standard section air pipes produced in the step S4.
Further, the multi-professional design three-dimensional model in step S1 includes, but is not limited to, a construction professional design three-dimensional model, a structural professional design three-dimensional model, an electrical professional design three-dimensional model, a heating and ventilation professional design three-dimensional model, and a water supply and drainage professional design three-dimensional model.
Further, in the step S2, the pipeline system layout of the multi-professional design three-dimensional model is optimized according to the comprehensive layout principle of the electromechanical pipelines, the installation procedure and operation and maintenance feasibility of the pipeline equipment, and the result of collision detection, so as to obtain a construction three-dimensional model with construction feasibility.
Further, in the step S3, the pipeline system of the construction three-dimensional model is split according to the connection mode of the air pipe system and the installation process of the air pipe system, so as to obtain the three-dimensional model of the prefabricated air pipe system including the air pipe models of the different specification standard sections and the air pipe fitting models of the parameter sections.
Further, the step S4 specifically includes the following steps:
s41, obtaining a prefabricated drawing of the standard section air pipe according to the standard section air pipe model;
s42, producing and obtaining the standard section air pipe based on the prefabricated processing drawing of the standard section air pipe;
and S43, mounting the produced standard section air pipe to the site, and then measuring the space connection data required by the parameter section air pipe fitting on the site.
Further, step S42 is specifically to add a production code to the standard segment air duct model based on the prefabricated drawing of the standard segment air duct, and output the production code of the standard segment air duct model to produce and obtain the corresponding standard segment air duct.
Further, the step S43 specifically includes the following steps:
s431, mounting the produced standard section air pipe to the site, and then measuring the mounting space of the parameter section air pipe fitting by using a distance measuring instrument;
s432, conducting 3D scanning on the installation space of the air pipe fitting in the parameter section, and creating a virtual air pipe system model according to the 3D scanning data to obtain space connection data of the air pipe fitting in the parameter section.
Further, the step S6 specifically includes the following steps:
s61, obtaining a prefabricated drawing after updating of the parameter section air pipe fitting according to the updated parameter section air pipe fitting model;
s62, adding production codes to the parameter section air pipe fitting model based on the updated prefabricated machining drawing of the parameter section air pipe fitting, and outputting the production codes of the parameter section air pipe fitting model to produce and obtain the corresponding parameter section air pipe fitting;
and S63, combining the standard section air pipe and the parameter section air pipe fitting obtained by production to jointly obtain the prefabricated air pipe system.
Further, the production code comprises one or more of a manufacturer code, an air duct number, a system number, a material number, a size number, an eccentric number, a thickness number and an installation mode code.
Further, step S63 is specifically to code and mark the standard segment air pipe and the parameter segment air pipe fitting obtained by production, so as to complete the prefabrication process of the air pipe system.
Compared with the prior art, the invention has the following advantages:
firstly, after three-dimensional modeling and optimization are carried out by adopting a BIM technology, a three-dimensional model of a prefabricated air pipe system is split into a standard section air pipe model and a parameter section air pipe fitting model, then a standard section air pipe is produced according to a prefabricated processing diagram of the standard section air pipe model and field installation is completed so as to measure the installation space of the parameter section air pipe fitting, then the space connection data of the parameter section air pipe fitting is obtained according to the installation space, and then the final prefabricated processing diagram of the parameter section air pipe fitting is obtained according to the space connection data of the parameter section air pipe fitting and other prefabricated parameters of the parameter section air pipe fitting. Because the spatial connection data of the parameter section air pipe fitting is obtained according to the actual installation space, the parameter section prefabricated air pipe system which is matched with the installation space can be accurately processed, so that the problem that the prefabricated air pipe system cannot be installed due to field operation and other construction errors is avoided, and the accuracy rate of the prefabricated air pipe system and the utilization rate of a subsequent prefabricated air pipe system are improved.
The three-dimensional model of the prefabricated air pipe system is divided into the standard section air pipe model and the parameter section air pipe fitting model, and the industrial prefabricated processing production is carried out based on the prefabricated processing drawings of the two models, so that the industrial prefabricated processing is not influenced by weather and construction site conditions, and the efficiency of site processing operation is greatly improved.
The method comprises the steps of firstly producing the standard section air pipe, carrying out field installation on the produced standard section air pipe, and accurately updating the spatial connection data of the parameter section air pipe fitting model by measuring the installation space of the parameter section air pipe fitting on the field, so that personnel responsible for acquiring the spatial connection data information of the parameter section air pipe fitting are only required to be arranged on the actual installation field, thereby reducing the labor configuration on the field, reducing the labor cost of the project, improving the construction efficiency and ensuring the construction quality and the safety of constructors.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention;
FIG. 2 is a schematic diagram of the prefabrication process of the air duct system in the example;
FIG. 3 is a prefabrication processing drawing of the air pipe fitting of the parameter section in the embodiment;
FIG. 4 is a schematic diagram of a process of adding and outputting production codes to the parameter section air pipe fitting model in the embodiment.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
As shown in fig. 1, a prefabrication method of a BIM based air duct system includes the following steps:
s1, constructing a multi-professional design three-dimensional model based on the BIM technology, wherein the multi-professional design three-dimensional model comprises but is not limited to a construction professional design three-dimensional model, a structure professional design three-dimensional model, an electrical professional design three-dimensional model, a heating and ventilation professional design three-dimensional model and a water supply and drainage professional design three-dimensional model;
s2, optimizing the pipeline system arrangement of the multi-professional design three-dimensional model to obtain a construction three-dimensional model with construction feasibility, specifically, optimizing the pipeline system arrangement of the multi-professional design three-dimensional model according to the comprehensive arrangement principle of the electromechanical pipelines, the installation procedure of pipeline equipment and the operation and maintenance feasibility, or optimizing the pipeline system arrangement of the multi-professional design three-dimensional model according to the collision detection result to obtain the construction three-dimensional model with construction feasibility;
s3, splitting the pipeline system of the construction three-dimensional model to obtain a three-dimensional model of the prefabricated air pipe system, wherein the three-dimensional model of the prefabricated air pipe system comprises a standard section air pipe model and a parameter section air pipe fitting model, and the pipeline system of the construction three-dimensional model is split according to the connection mode of the air pipe system and the installation process of the air pipe system to obtain the three-dimensional model of the prefabricated air pipe system comprising the standard section air pipe models and the parameter section air pipe fitting models with different specifications;
s4, producing to obtain a corresponding standard section air pipe according to the standard section air pipe model, installing the produced standard section air pipe to the site, and then measuring on the site to obtain the space connection data required by the parameter section air pipe fitting, specifically:
firstly, obtaining a prefabricated processing drawing of a standard section air pipe according to a standard section air pipe model;
then, based on the prefabricated drawing of the standard section air pipe, producing to obtain the standard section air pipe, specifically, based on the prefabricated drawing of the standard section air pipe, adding a production code to the standard section air pipe model, and outputting the production code of the standard section air pipe model to produce to obtain the corresponding standard section air pipe;
finally, the produced standard section air pipe is installed to the site, and then the space connection data required by the parameter section air pipe fitting is obtained through site measurement, specifically, a distance measuring instrument is adopted to measure the installation space of the parameter section air pipe fitting, then 3D scanning is carried out on the installation space of the parameter section air pipe fitting, and a virtual air pipe system model is created according to the 3D scanning data so as to obtain the space connection data of the parameter section air pipe fitting;
s5, updating the geometric parameters of the parameter section air pipe fitting model according to the spatial connection data required by the parameter section air pipe fitting measured on site to obtain an updated parameter section air pipe fitting model;
s6, producing and obtaining corresponding parameter section air pipe fittings according to the updated parameter section air pipe fitting model, and finishing the prefabricating process of the air pipe system together by combining the standard section air pipes produced in the step S4, specifically:
firstly, obtaining a prefabricated drawing after updating of the parameter section air pipe fitting according to an updated parameter section air pipe fitting model;
then adding production codes to the parameter section air pipe fitting model based on the updated prefabricated drawing of the parameter section air pipe fitting, and outputting the production codes of the parameter section air pipe fitting model to produce and obtain the corresponding parameter section air pipe fitting;
and finally, combining the standard section air pipe and the parameter section air pipe fitting obtained by production, and carrying out coding marking on the standard section air pipe and the parameter section air pipe fitting obtained by production so as to finish the prefabrication process of the air pipe system.
When the production codes are added to the standard section air pipe model and the parameter section air pipe fitting model, the added production codes comprise one or more of manufacturer codes, air pipe numbers, system numbers, material numbers, size numbers, eccentric numbers, thickness numbers and installation mode codes.
The method is applied to practice, and the prefabrication process of the air duct system is shown in figure 2:
the method comprises the steps of firstly, establishing a multi-professional design three-dimensional model, wherein the multi-professional design comprises not only the professions of building, structure, electricity, heating ventilation, water supply and drainage and the like, in practice, BIM modeling software (such as Revit software) can be used for respectively establishing the BIM models of the professions of building, structure, electricity, heating ventilation, water supply and drainage and the like and the initial BIM model of the prefabricated air pipe system, and the professional models and the initial BIM model of the prefabricated air pipe system are linked to form a complete three-dimensional model.
And step two, deepening and splitting the multi-professional design three-dimensional model to obtain a three-dimensional model of the prefabricated air pipe system, wherein the three-dimensional model of the prefabricated air pipe system is divided into a standard section air pipe model and a parameter section air pipe fitting model.
After the multi-professional design three-dimensional model is obtained in the first step, the three-dimensional model needs to be deeply designed to obtain a construction three-dimensional model with construction feasibility, and then according to the connection mode of the air pipe system and by combining the installation process of the air pipe system, the prefabrication and disassembly of the air pipe system model is carried out on the pipeline system of the construction three-dimensional model to obtain the prefabricated air pipe system three-dimensional model.
Wherein the step of deepening the three-dimensional model comprises: and optimizing the pipeline system arrangement of the three-dimensional model to obtain a construction three-dimensional model with construction feasibility.
The layout of the pipeline systems of the multi-professional design three-dimensional model can be optimized according to the comprehensive layout principle of the electromechanical pipelines, the installation procedure of pipeline equipment and the feasibility of operation and maintenance, so that the air pipe system is reasonable and orderly in layout and small in resistance, and the construction three-dimensional model with construction feasibility is obtained. When adjusting the installation process of tuber pipe system and electromechanical device, the feasibility of tuber pipe system installation, the reservation of later stage maintenance space need be considered simultaneously, the feasibility of the equipment that needs the operation such as equipment valve, the later stage operation of being convenient for is maintained the effect.
The pipeline system arrangement can also be optimized according to the collision detection mode. Specifically, collision detection can be performed on the three-dimensional model in BIM software, and a collision result can be recorded and displayed. And if the collision result is not zero collision, adjusting the three-dimensional model. And continuing to perform collision detection on the adjusted three-dimensional model, and if the collision result is zero collision, saving the three-dimensional model. The arrangement of the pipeline systems of the three-dimensional model is optimized, so that the arrangement of the air pipe system is reasonable, and the construction three-dimensional model with construction feasibility can be obtained.
In actual construction, the problem that the prefabricated air pipe system cannot be installed due to errors is always that the prefabricated air pipe system is connected with the pipe fitting. Therefore, the prefabricated air pipe system can be divided into the air pipe fittings at the connecting positions of the standard section air pipes and the air pipes which are installed preferentially according to the actual installation process of the air pipe system, so that the three-dimensional model of the prefabricated air pipe system can be divided into a standard section air pipe model and a parameter section air pipe fitting model, and the connecting relation between the standard section air pipe model and the parameter section air pipe fitting model is set. And the standard section air pipe model corresponds to an air pipe system which is installed preferentially. The parameter section air pipe fitting model corresponds to an air pipe system at the installation and connection part of the air pipe.
It can be understood that, in actual construction, the parameter section air pipe fitting model is not limited to correspond to the installation position of the joint of the prefabricated air pipe system, and can also correspond to other installation positions of the prefabricated air pipe system. The specific corresponding installation position of the parameter section air pipe fitting model needs to be determined by combining with actual construction needs, for example, other installation positions which are easy to have errors.
And thirdly, obtaining a prefabricated drawing of the standard section air pipe according to the standard section air pipe model, and producing the standard section air pipe according to the prefabricated drawing of the standard section air pipe.
And the three-dimensional model of the prefabricated air pipe system is provided with prefabricated processing information of the prefabricated air pipe system. And outputting the prefabricated machining drawing information of the standard section air pipe from the standard section air pipe model and generating a machining drawing. And (4) guiding the prefabricated drawing of the standard section air pipe into mechanical processing equipment, so that the standard section air pipe can be produced.
Firstly, adding production codes to the standard section air pipe model according to a prefabricated drawing contained in the standard section air pipe model, and outputting the production codes of the standard section air pipe model. The three-dimensional model of the prefabricated air pipe system comprises a prefabricated processing diagram of processing information of the air pipe system, such as material, side length, thickness and the like. And (4) adding production codes to the air pipe system model by considering manufacturers, systems, materials, sizes, thickness numbers, installation modes and the like. Not only can add the production code to standard section tuber pipe model, can also add the production code to parameter section tuber pipe fitting model. And when the production codes are added, the standard section air pipe model and the parameter section air pipe fitting model are distinguished and coded. For example, the code number of the standard section air pipe can be DT, and the code number of the parameter section air pipe fitting can be DF.
The coding information of the production code can comprise one or more of a manufacturer code, an air duct number, a system number, a material number, a size number, an eccentric number, a thickness number and an installation mode code. Illustratively, the production code may be in the form of: manufacturer coding, air pipe system numbering, material numbering, size numbering, eccentric numbering, pressure grade numbering, length and installation mode.
For example, the medium-pressure galvanized steel plate standard section air-conditioning blast pipe with the length of 2000MM, the width of 800MM and the height of 400MM is horizontally eccentric by 2MM and vertically eccentric by 5MM, and the production code of the medium-pressure galvanized steel plate standard section air-conditioning blast pipe is TJ-FA-DX-800x400-L2H5-M-2000-DZ by hoisting.
And fourthly, after the standard section air pipe is installed on site, measuring the installation space of the parameter section air pipe fitting.
And after the standard section air pipe is produced, the standard section air pipe is preferentially installed on site. Because the air pipe fittings of the parameter section are not processed, the installation space of the air pipe fittings of the parameter section is reserved when the standard section air pipe is installed.
And fifthly, updating the spatial connection data of the parameter section air pipe fitting in the three-dimensional model of the prefabricated air pipe system according to the installation spatial data of the parameter section air pipe fitting to obtain the updated prefabricated drawing of the parameter section air pipe fitting.
In practice, the installation space of the reserved parameter section air pipe fitting can be measured by a distance measuring device (such as an infrared distance meter, a laser distance meter and the like).
And after the standard section air pipe is installed, 3D scanning is carried out on the installation space of the parameter section air pipe fitting, and a virtual air pipe system model is created according to the 3D scanning data so as to obtain the space connection data of the parameter section air pipe fitting. The standard section air pipe which is installed on site can be subjected to 3D scanning through the 3D scanner, so that 3D scanning data of the installation space of the parameter section air pipe fitting can be obtained. And creating a virtual air duct system model according to the data of the 3D scanning. And comparing the virtual air pipe system model with the three-dimensional model of the prefabricated air pipe system, and finding out the part, corresponding to the parameter section air pipe fitting, in the virtual air pipe system model through space position fitting. Because the parameter section air pipe fittings are arranged at the positions corresponding to the residual installation spaces, the space connection data of the parameter section air pipe fittings can be obtained according to the space data in the virtual air pipe system model.
Because the parameter section air pipe fitting is arranged at the installation position corresponding to the installation space, the space connection data of the parameter section air pipe fitting can be accurately obtained according to the installation space. And outputting other prefabricated processing drawings of the parameter section air pipe fitting from the parameter section air pipe fitting model. And (3) based on the spatial connection data of the air pipe fitting in the parameter section and other prefabrication processing data except the spatial connection data, the spatial connection data and the other prefabrication processing data are integrated into a final prefabrication processing drawing (shown in figure 3) of the air pipe fitting in the parameter section. And (4) leading the final prefabricated processing drawing of the parameter section air pipe fitting into the machining equipment, producing the parameter section air pipe fitting, and finally installing the parameter section air pipe fitting at the position corresponding to the reserved installation space. Because the spatial connection data of the air pipe fittings of the parameter section are obtained according to the installation space, the installation positions of the air pipe fittings of the parameter section and the installation space are matched very well.
And sixthly, producing the parameter section air pipe fitting according to the prefabricated processing drawing of the parameter section air pipe fitting.
And a prefabricated processing drawing of the prefabricated air pipe system is arranged in the three-dimensional model of the prefabricated air pipe system. And outputting the prefabricating and processing drawing of the parameter section air pipe fitting from the parameter section air pipe fitting model. And (4) guiding the prefabricated processing drawing of the air pipe fitting of the parameter section into the machining equipment, so that the air pipe fitting of the parameter section can be produced.
And adding production codes to the parameter section air pipe fitting model according to the prefabricated drawing after the parameter section air pipe fitting model is updated, and outputting the production codes of the parameter section air pipe fitting model.
Specifically, the spatial connection data of the air pipe fitting in the parameter section can be accurately obtained according to the installation space. The parameter section air pipe fitting model comprises other prefabricated processing drawings of the parameter section air pipe fitting. And taking the space connection data of the air pipe fitting in the parameter section and the other prefabricated drawings as the prefabricated drawings after the model of the air pipe fitting in the parameter section is updated. And (3) carrying out production coding on the parameter section air pipe fitting model according to the updated prefabricated drawing, outputting the production coding of the parameter section air pipe fitting model, and obtaining the updated prefabricated drawing of the parameter section air pipe fitting, thereby facilitating the production of the parameter section air pipe fitting.
As shown in fig. 4, the steps of adding the production code to the parameter section air pipe fitting model according to the pre-machining drawing after the parameter section air pipe fitting model is updated and outputting the production code of the parameter section air pipe fitting model include:
1. and adding production codes to the parameter section air pipe fitting model according to the prefabricated drawing contained in the parameter section air pipe fitting model. Before the installation space is not obtained, the production coding can be carried out on the parameter section air pipe fitting model. For example, when the standard section air pipe model is coded, the parameter section air pipe fitting model is coded at the same time, so that the operation is convenient.
2. And updating the production code of the air pipe fitting model in the parameter section according to the installation space, and outputting the updated production code of the air pipe fitting model in the parameter section. And after obtaining the installation space, obtaining the space connection data of the air pipe fittings in the parameter section according to the installation space. After the spatial connection data of the parameter section air pipe fitting is obtained, the spatial information of the parameter section air pipe fitting is updated only in the production code of the parameter section air pipe fitting model, so that the final production code of the parameter section air pipe fitting can be obtained, and the operation is convenient.
And seventhly, coding and marking the processed prefabricated air pipe system.
The prefabricated air pipe system after processing comprises a standard section air pipe and a parameter section air pipe fitting, and the standard section air pipe and the parameter section air pipe fitting can be coded and marked respectively. For example, the coding and marking are carried out according to the code of a manufacturer, the serial number of an air duct, the serial number of a system, the serial number of materials, the serial number of sizes, the serial number of eccentricity, the serial number of thicknesses, the code of an installation mode and the like. By carrying out coding marking on the prefabricated air pipe system after processing, the corresponding prefabricated air pipe system can be conveniently found according to the installation procedure and the installation position during field installation.
According to the method, the production codes are added to the three-dimensional models (the standard section air pipe model and the parameter section air pipe fitting model) of the prefabricated air pipe system, and the production codes of the three-dimensional models (the standard section air pipe model and the parameter section air pipe fitting model) of the prefabricated air pipe system are output, so that the prefabricated processing drawing of the prefabricated air pipe system contained in the production codes can be obtained. And a prefabricated processing diagram of the prefabricated air pipe system corresponding to the three-dimensional model (the standard section air pipe model and the parameter section air pipe fitting model) of the prefabricated air pipe system is conveniently obtained by adding and outputting the production codes. And the production code of the standard section air pipe model corresponds to the prefabricated processing drawing of the standard section air pipe. And the production code of the parameter section air pipe fitting model corresponds to the prefabricated processing drawing of the parameter section air pipe fitting.
According to the air pipe system prefabricating method, after three-dimensional modeling and optimization are carried out by adopting a BIM technology, the three-dimensional model of the prefabricated air pipe system is split into a standard section air pipe model and a parameter section air pipe fitting model. And (4) producing the standard section air pipe according to the prefabricated processing drawing of the standard section air pipe model, and measuring the installation space of the parameter section air pipe fitting after the on-site installation is completed. And obtaining the spatial connection data of the air pipe fitting in the parameter section according to the installation space. And obtaining a final prefabricating and processing diagram of the parameter section air pipe fitting according to the space connection data of the parameter section air pipe fitting and other prefabricating and processing data of the parameter section air pipe fitting model. Because the spatial connection data of the parameter section air pipe fitting is obtained according to the installation space, the parameter section prefabricated air pipe system which is matched with the installation space can be accurately processed, and the problem that the prefabricated air pipe system cannot be installed due to field operation and other construction errors is solved. According to the air pipe system prefabricating method, the air pipe system is subjected to industrialized prefabrication processing production, the industrialized prefabrication processing is not influenced by weather and construction site conditions, and the efficiency of site processing operation is greatly improved. According to the air pipe system prefabricating method, due to the prefabrication production of the air pipe system, only personnel responsible for acquiring the prefabrication drawing of the prefabricated air pipe system are required to be arranged on the installation site, so that the labor allocation on the site is reduced, the labor cost of a project is reduced, the construction efficiency can be improved, and the construction quality and the safety of constructors can be ensured.
Claims (10)
1. A BIM-based air duct system prefabrication method is characterized by comprising the following steps:
s1, constructing a multi-professional design three-dimensional model based on the BIM technology;
s2, optimizing the pipeline system arrangement of the multi-professional design three-dimensional model to obtain a construction three-dimensional model with construction feasibility;
s3, splitting the pipeline system for constructing the three-dimensional model to obtain a three-dimensional model of the prefabricated air pipe system, wherein the three-dimensional model of the prefabricated air pipe system comprises a standard section air pipe model and a parameter section air pipe fitting model;
s4, producing and obtaining a corresponding standard section air pipe according to the standard section air pipe model, installing the produced standard section air pipe to the site, and then measuring the site to obtain the space connection data required by the parameter section air pipe fitting;
s5, updating the geometric parameters of the parameter section air pipe fitting model according to the spatial connection data required by the parameter section air pipe fitting measured on site to obtain an updated parameter section air pipe fitting model;
and S6, producing and obtaining corresponding parameter section air pipe fittings according to the updated parameter section air pipe fitting model, and finishing the prefabricating process of the air pipe system together with the standard section air pipes produced in the step S4.
2. The BIM-based air duct system prefabrication method of claim 1, wherein the multiple professionally designed three-dimensional models in the step S1 include, but are not limited to, architectural professionally designed three-dimensional models, structural professionally designed three-dimensional models, electrical professionally designed three-dimensional models, heating and ventilation professionally designed three-dimensional models, and water supply and drainage professionally designed three-dimensional models.
3. The BIM-based air duct system prefabrication method according to claim 1, wherein the step S2 is specifically to optimize the arrangement of the duct systems of the multi-professional design three-dimensional model according to an electromechanical duct comprehensive arrangement principle, an installation procedure of a duct device and feasibility of operation and maintenance, or optimize the arrangement of the duct systems of the multi-professional design three-dimensional model according to a result of collision detection, so as to obtain a construction three-dimensional model with construction feasibility.
4. The BIM-based air duct system prefabrication method according to claim 1, wherein the step S3 is specifically to split a pipeline system of the construction three-dimensional model according to an air duct system connection mode and an air duct system installation process to obtain the prefabricated air duct system three-dimensional model including different specification standard section air duct models and parameter section air duct pipe fitting models.
5. The BIM-based air duct system prefabrication method according to claim 1, wherein the step S4 specifically comprises the steps of:
s41, obtaining a prefabricated drawing of the standard section air pipe according to the standard section air pipe model;
s42, producing and obtaining the standard section air pipe based on the prefabricated processing drawing of the standard section air pipe;
and S43, mounting the produced standard section air pipe to the site, and then measuring the space connection data required by the parameter section air pipe fitting on the site.
6. The BIM-based air duct system prefabrication method according to claim 5, wherein the step S42 is specifically to add production codes to the standard segment air duct model based on the prefabrication drawing of the standard segment air duct, and output the production codes of the standard segment air duct model to produce and obtain the corresponding standard segment air duct.
7. The BIM-based air duct system prefabrication method according to claim 5, wherein said step S43 specifically comprises the steps of:
s431, mounting the produced standard section air pipe to the site, and then measuring the mounting space of the parameter section air pipe fitting by using a distance measuring instrument;
s432, conducting 3D scanning on the installation space of the air pipe fitting in the parameter section, and creating a virtual air pipe system model according to the 3D scanning data to obtain space connection data of the air pipe fitting in the parameter section.
8. The BIM-based air duct system prefabrication method according to claim 1, wherein the step S6 specifically comprises the steps of:
s61, obtaining a prefabricated drawing after updating of the parameter section air pipe fitting according to the updated parameter section air pipe fitting model;
s62, adding production codes to the parameter section air pipe fitting model based on the updated prefabricated machining drawing of the parameter section air pipe fitting, and outputting the production codes of the parameter section air pipe fitting model to produce and obtain the corresponding parameter section air pipe fitting;
and S63, combining the standard section air pipe and the parameter section air pipe fitting obtained by production to jointly obtain the prefabricated air pipe system.
9. A BIM-based air duct system prefabrication method according to any one of claims 6 or 8, wherein the production code includes one or more of manufacturer code, air duct number, system number, material number, size number, eccentric number, thickness number and installation mode code.
10. The BIM-based air duct system prefabrication method of claim 8, wherein the step S63 is specifically to code and mark the produced standard section air duct and parameter section air duct pipe fittings, so as to complete the air duct system prefabrication process.
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